chart: longhorn default storageClass replica count became configurable

chart/questions.yml

@@ -63,6 +63,14 @@ questions:
   type: boolean
   required: true
   label: Default Storage Class
+- variable: persistence.defaultClassReplicaCount
+  description: "Set replica count for default StorageClass"
+  group: "Longhorn Settings"
+  type: int
+  default: 3
+  min: 1
+  max: 10
+  label: Default Storage Class Replica Count
 - variable: ingress.enabled
   default: "false"
   description: "Expose app using Layer 7 Load Balancer - ingress"

chart/templates/storageclass.yaml

@@ -11,7 +11,7 @@ metadata:
   {{- end }}
 provisioner: rancher.io/longhorn
 parameters:
-  numberOfReplicas: "3"
+  numberOfReplicas: "{{ .Values.persistence.defaultClassReplicaCount }}"
   staleReplicaTimeout: "30"
   fromBackup: ""
   baseImage: ""

chart/values.yaml

@@ -27,6 +27,7 @@ persistence:
   # If there is none, the default /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ will be used.
   flexvolumePath:
   defaultClass: true
+  defaultClassReplicaCount: 3
 
 csi:
   attacherImage: